Belt-rail



I. K. TOLES. BELT RAIL.

APPLICATION FILED IULY 3. 1919.

Patented Mar. 9,1920.

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INVENTOR J.' K. To/es ATTORNEYS A WITNESS JUSTIN mir Tones, or sAN rnANCIsCo, CALIFORNIA.

BELT-BAIL.

Specication of Letters atent.

Patented Mar. 9, 1920.

Application inea my s, isis. semi No. sooass.

To all whom it, may concern:

Be it known that I, JUSTIN KAY Tonne, a'

citizen of the United States, and a resident Vixs of the city and county of San Francisco and State of California, have invented a new and useful Belt-Rail, of which the following is a specification. 4

My invention relates to belt rails fri erator cars.

object of the invention is to provide a beltrail with which the insulatin l'layers may be secured on the walls of a re rigerating car, and which greatly retards the conduction of heat therethrough, thus making the heat insulating material continuous, instead of arranging it in strips separated by non-insulating material as is the case when wooden belt rails are used.

The invention possesses other features of advantage, some of which, with the foregoing, will be set forth in the following description of the referred form of my invention which is illustratedin the drawings accompanying and forming part of the s ecification. I t is to be understood that I o not limit myself to the showing made by the said drawings and description, as I may ado t variations of the preferred form within t e scope of` my invention as set forth in the claims.

Referring to the drawings:

Figure 1 is a perspective view of a piece of belt rail made in accordance with my invention. v

Fi 2 is a vertical section taken transverse y through a ortionl of a refrigerator car wall, showing ow the belt rail of my for re- .invention is applied.

Fig. 3 is a transverse section through a modified form of belt rail.

The belt rail of my invention comprises a'built up shape as shown in Fig. -1 .formed by adhesively securing'together layers or sheets of berized and felted material, preferably rice straw. Alternate layers 2 are formed of relatively densely packed or felted fibers giving a hard sheet, and the intervening layers 3 are formed of relatively loosely packed fibers givin a soft sheet.

In the making of the ard sheets, the straw is first fiberized in any suitable manner, as by cooking in an alkaline solution, and then mascerated and washed. A suitable amount of the fioating fiber is thenaccumulated in a layer of relatively uniform thickness on a foraminous surface, the water being allowed to drain away. The material is then suitably worked to bring the smaller and finer fibers to the surface of the layer,

'to form a skin offiner texture than the. in-

terior of the layer. Theskins being of finer texture and less porous than the interior of the layer retard or break up convection currents tending'to pass through the material.

- The layers are finally pressed to condense.

the fibers and form a relatively stiff hard sheet which is thenl cut up into strips of the desired size. The making of the soft sheets is similar but they are not pressed, the fibers being merely loosely matted or felted together and worked to create the surface skin of fine fibers.

When these sheets are secured together in alternate layers', the laminated structure provides a plurality of surface skins which break up and retard the flow of heat through 'the structure, providing much greater heat insulating Value, than would be found in a homogeneous structure of the same size. The loosel feltedl fibers permit convection currents, iverted by the skins and dense layers to pass outwardly to the edges of the rail. The desired number of alternate layers of hard and soft material, as for instance five, as shown in Fig. 1 are adhesively secured together to form the main body of the rail, hard layers being preferably disposed on the outside: A similar composite structure of adhesively united alternate layers of hard and Isoft sheets, 5 and 6 i'espectively, but narrower than the main body is cemented to the main body, so that rafb- 'beted edges are formed longitudinall of the belt rail, lin which the edges 7 ofy the insulating layers 8 are adapted to lie. The edges 7 are thus condensed and securely held between theship lap siding 9 and the belt rail, which is secured in position in' any suitable way as by nails. The thickness of the belt rail is such 'as to bring its outer surface flush Iagainst the tongue and groove sheathing 12.

The belt rail thus comprises a laminated the contiguous hard layers 2 an'd 5 in Fig. 1 may be considered as one, or if desired, the contiguous layer 5 may be omitted, the 'succeeding soft layer 6 lying contiguous to the outer hard layer 2.

In Fig. 3 I have shown a modified form of belt rail in which strips 13 of densely felted material are cemented to the edges of the belt rail, thus completely inclosing the edges of tlie strips, and retarding the movement -of convection currents through the loosely felted layers.

I claim:

1. A `belt rail comprising a laminated structure formed of layers of fiberized and felted material.

y 2. A belt rail comprising a laminated structure formed of layers of fi'berized and felted cereal straw.

`3. A belt rail comprising a laminated structure formed of layers ot fiberized and felted material adhesively united, each layer having a skin which retards heat convection in greater degree than the interior ot' the layer.

4. A belt rail comprising a laminated structure formed of layers of fiberized and felted material adhesively united, each layer having a skin which retards heat convection in greater degree than the interior of the layer, and said layers being narrower on one side of the structure whereby rabbets are formed along adjacent edges thereof.'

5. A belt rail comprising a laminated structure formed of layers of berized and felted material, and having adjacent longitudinal edges rabbeted.

6. A belt Vrail comprising a laminated structure formed of layers of densely and loosely felted fibrous material.

7. A belt rail comprising a l'laminated structure formed of densely and loosely felted fibrous 4material in altenate layers.

8. A belt rail comprising al laminated,-

structure formed .of densely and loosely felted fibrous material in alternatelayers and 'having 'adjacent longitudinal edges rabbeted. 9. A belt rail comprising a laminated structure formed of layers of densely and loosely felted fibrous material formed with a surface skin of finer fibers on each layer. 10. A belt rail comprising a laminated structure formed of adhesively united layers ot' fiberized and felted material, and a layer of similar material adhesively united to v and contiguous With the edges of said layers.

In testimony whereof I have hereunto set my hand at San Francisco, California, this 27th day of June, 1919.

v JUSTIN KAY TOLES. 

